Selective signaling system.



L. E. COON.

SELECTIVE SIGNALING SYSTEM.

APPLICATION FILED JUNE 18. 1911.

1356 804, I Patented Dec. 18, 191

prising, astepl-by-step element operated in response to .currentimpulses of, oppositepo- LESLIE E. coon, or CHATHAM, "NEWI'JEBSEY, inssrenos To wnsrnrm; ELECTR C; com. Y

LPANYV, INCORPORACIIEIPfOFNEWYORK, N, Y; AcoRPonATIoNor NEW YoRK;

SELEC'IQIVEJSIGNALIN'GSYSTEM."

useful Improvements in Selective Signaling 'Systems, of which tlle. f .ollowingjisa full, clear, conci se, and exactfdescription. V

This invention relates to selective signaling systems and, more particularly to selective signaling systemsin Which are employed selectively operated step-by-step circuit controllingfldevices adapted to ,be ope 'gded in response to current impulses of opposite polafrity lover a line circuit to Close signaling ,circuitcontacts. Such are vshown and described in a co-pending application toiJo sephQjField, Serial No 98,8$4, file'cl'May A stepl-by-step device off the: character which may; be employed in this invention is disclosed in an application to Joseph C.

Field, Serial No. "98,384; filed May', l8, 1 915, in which thereis shown and described va step-by-step circuit. controlling device comlaritythrough a polarized stepping magnet to close station contacts controllingsignaling circuits.

predetermined position, in'which position impulsesimpressedupon the l ne will cause an advancement {otall step-loyfstep elements Y 'tqcprovi dem s where y an audib ignal,

such as, a single stroke bell, may be operated at all stations simultaneously,-,andfin QOHSQf nance with, mpulses ffrom an extraneous source, such'as.tlmesignals (over a telegraph line.

In'accordance with the generalfeatllresiof this inventionfthere is providefclar signal at each station, the winding ofwhich isladapted to be. brought intoc'ircuit with ,the stepby-step' element. in. its momentaryclosing posit'i'on, to receive the ,disc'hajrgeoia condenser connectd'sin bridge of-Ythe line Wire's-in 'se'- rieswith the polarized stepping magnet. A second condenser included in series. with the signal and in bridge of the"iirst menti on'edv condensers prevents a direct circuit path being established through the stepping'magnet. The drawing is a diagram of a circuit .ApplicationfilellIuneliLlBlfY. Seria1No..175,396

Provision is made whereby all step-.by-Vstep elementsmay'beadvanced to a ;$pecifi ca.ti0n of Letters Patent. Patenteingai18;;19197;-

' and iaplparatus "illustrat'ing theijfeatures c i this invention. As shown n the'drawing, 5 an cl fidesig nate line wlres which term nate in contacts 7 7, '8, 9. and 10 of a polerchangin relay 11 co the armature springs 12 and 13 of which are connected with a source} of current 14L A cir'' cuit for the pole-changing relay 1 1 includes a battery 15,.a key 16, by means-of which the impulses are sent to operate the 'se'lectivec5v circuitcontrolling device, and contacts" l7 i of a, relay 18 which are adapted Ito be included in circuit with the relay 11 by means of av switch 19. The, relay l8fniay becon; nected with atelegraph circuit over whichvo, time signals are sent; The above enumerated apparatus is located at a despatchers station' designatedas A. e 1 e V Way-stations B and C are associated with' the line wires 5 and 6 and at each of 'these '75... way-stations there is located a step-by-stepf circuit controlling device comprising in gen eral a step-by-step"rotatable elenientfQO to which is secureda' toothed wheel 21; A"piv 1 ctally supportedipawlj2 2 is carried bya PiVr 8Q.

o ted 211K123 whichjis swung'in the samerli re'ctionan [response to each alternate move-f ment or an armature 24 of a polarize'chstepi rpingimagnebgi A Contact 7 126. carried be 3 led i h j m vm ll Of said step-by step element 20 into successive n mnt v wi h s at nary c n t 28,2 and "3 When the jcontact arm '26 isjin engagement with the contacts27 01128, an d,'the steppingeo bythe step-bystep element 20 is adapted tofip magnet 25iis -wcl n rg zcd, arcontactj spr ngf lco1 rcl1ed,bythe pivo ed arm 23 is meve'd'f 7 into engagement with a pin 33 or 34;,asfthe case'may'be, to retain "the step' by-ste p'; e:

ment 20 in its advancedpositionand in 9,5,

tain the contact a rn1 26 infengagement with one of the contacts 27 or 2.8, 'Injthe caseiof the contact 28- this completes a'jloca'l circuit; through awl ignal J35, When th e \step', liy,-.step

element20 is advanced: 59a; position where Loo I Qtl rough' the "stepping magnet 25 W111 Vance the Contact arm 26 into, engagement 7 with the contact 30 where it will be held only so long as there is energy-through the stepp ping magnet 25. As soon however as the stepping magnet is. denergized, the step-bystep element will drop back and the arm 31 will rengage the hooked member 37 to maintain the step-by-step element in its advanced position. With this arrangement the contact arm 26 may be moved into temporary engagement with the contact 30 as many times as desired, through energization and deenergization of the stepping magnet 25 without starting the step-by-step element 20 from a zero position each time.

The stepping magnet 25 is connected in bridge of the line wires 5 and 6 and in series with a condenser 40. A bell 41, ar-

ranged to give a single stroke signal. in respouse to each impulse of current therethrough, has one end of its winding connected with the contact 30 and its other end with one plate of a condenser 42, the other plate of which is connected between the line wire 5 and the condenser 40.

In the operation of this invention all of the selectors on the line will be operated to move their step-hystep elements into aposi-.

tion where the contact spring 31 is in engagement with the hooked member 37. Then, upon closure of the switch 19, the pole-changer magnet 11 will be operated in consonance with the impulses through the relay 18, to send current impulses over the line wires and through the stepping magnet 25 at each station. During the energization of the stepping magnet in response to these impulses, the co-ntactarm 26 engages the contact 80 but becomes disengaged therefrom ,upon the deenergization of the stepping magnet. Each time the contact arm26 and the contact 30 are brought into engagement the condenser 40 discharges through the winding of the bell 41 to cause a one-stroke signal thereof.

Two signals on the bell 41 will be given for each impulse through the relay 18. The condenser 42 prevents a direct currentpath being established through the selector bridge, thereby preventing the selector sticking in operated position. due to energy through its winding.

WVhat is claimed is:

1. In a selective signaling system, a pair of line wires, a sending station and a plurality of way-stations connected therewith, astep-by-step circuit controlling element located at'each of said way-stations, a stepping magnet at each of sald way-stations.

forcontrolling the advancement of the stepby-step element thereat, a contact adapted to be closed and malntamed closed in one Qopies 0K this patent may be obtained for five cents each, by addressing the Commissioner of Patentm.

position of said step-by-step element, a signal, a circuit therefor closed by said contact, a second contact adapted. to be intermittently closed by said step-by-step element in a second position thereof, and in response to the energization and deenergization of said stepping magnet, a signal, and means for" causing said signal to give a single stroke indication for each closure of said second mentioned contact.

2. In a selective signaling system, apair of line Wires, a sending station and'a plu rality of way-stations connected therewith, 1

.a stePby-step circuit controlling device 1 cated at each of said way-stations, a stepping magnet at each of said way-stations connected in bridge of said line wires and adapted to control the advancement of the step-by-step element thereat, 'a' condenser included in series with eachstepping magnet,

a contact adaptedto be closed and maintamed closed by said step-by-step element in one position thereof, a signaling circuit con trolled by the closure of said contact, a sec:

ond contact adapted to be intermittently closed by said element in a second position thereof, and in response to the'energization and deenergization of said stepping magnet, a signal, and means for causing said condenser to discharge through said signal at each closure of said second mentioned contact to cause said signal to give a one-stroke indication. I

3. In a selectlve signaling system, a pair of line wires, a sending station and a plurality of way-stations connected therewith, a step-by-step circuit controlling device located at each of said way-stations, a stepping magnetat each of said way-stations connected in bridge of said line wires and adapted to of said contact, a second contact adapted to" be intermittently closed by said step-by-ste'p element in a second position thereof and in response to the energization and denergiza-' tion of said stepping magnet, a signal connected in bridge of said condenser to be operated by the discharge thereof, and a sec ond condenser in series with said signal.

In witness whereof, I hereunto subscribe my name this 12th day of June, A. D. 191.7.

LESLIE E. COON.

Washington, D. Q." 

